Peters



(No Model.) 2 Sheets-Sheet 1 SAY.R.'SARGENT. SEWING MACHINE.

lvm-287,867. Patented Nav. 6,1883.v

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.- R. SARGENT.

SEWING MACH-INE.

No. 287,-86'7- Patented-Nov. 6,1383."

l NITED STATES PATENT OFFICE.

sAMUEL n. sARcENT, QETEREE HAUTE, INDIANA.

SEWING-MACHINE.

SPECIFICATION forming part of Letters'ratent No. 287,867, dated November c, 1883. v V Application filed January 8, 1883. (No model.)` E

To all vwhom it may concern:

Beit known that I, SAMUEL R. SARGENT,

of rFerre Haute, county of Vigo, State `of Indiana, have-invented or discovered a new and p useful Improvement in Sewing-Machines; and

ings, making a part of this specification, in

which-like letters indicating like parts- Figure 1 is a view in side elevation of my improved shuttle mechanism. Fig. 2 is a plan view of the inner face of the shuttle lid or cover, illustrative ofthe tension mechanism. Fig. 3 is a sectional view of the parts shown in Fig. 2. Fig. 4 is aperspective view of the, shuttle, and Fig. 5 is a horizontal sectional view of the shuttle mechanism, taken i'n the plane of thel line x w, Fig. 1, all the figures illustrating the several parts full' or working size. Fig.y 6, Sheet 2, is aperspective view to an enlarged scale of the gate of the shuttle-box and ofthe spring and pin for hinging the gate, the'parts being detached. Fig. 7 is a similar view of the shuttle-carrier. Fig. 8 is a sec- .tional perspective View of the bobbin. Fig. 9

is a perspective view of the shuttle, partially opened, showing the bobbin in place; and Fig. 10 is a perspective view of the under face of the shuttle-lid, allthe figures of Sheet2 being drawn to the same scal My present invention relates .to certain improvements in shuttle mechanism for manipulating the under thread of sewing-machines;

and it consists, in general terms, of certain Y combinations of devices for supporting and carrying the shuttle in a rotary race, for securing and releasing the shuttle, and for regusupported in any suitable journal-bearings lating the tension of the thread, as hereinafter more fully described and claimed.

- In the drawings, A represents a metal plate, secured by lugs A and screws A2 to the under face of bed-plate D, which, latter constitutes the main supporting-plate for carrying the principal operative/parts of sewing-machines as ordinarily constructed. The position of plate A with relation to the bed D is in a transverse vertical plane under j and in or parallel with the plane of the needle d. At right angles to this plate A, below the bed'D, is mounted a rotary shaft, B, which may be v and be driven by any suitable power-connecas devices adapted for these purposes are well known in the'a'rt. -I have, however, shown and described ldevices adapted for these purposes in the subject-matter of other applications filed even date herewith,V Serial Nos. 81,247 and 81,249.

Upon the inner end of shaft B is secured a circular disk or head, b, whichv is seated within a similarly-shaped opening, al, in plate A, with the front faces of the disk and plate flush or' in the same'plane. b, near its periphery, is pivotally attached the shuttle frame or carrier E by screw-bolt e, 'whereby such carrier is rotated in circular race about the axis of the shaft.

In order to maintain the frame in Iupright position orwith one side uppermostV during such rotation, a tail-guide, E', is extended downward from such frame or carrier, and its lower end, e', is bent horizontally into a slot, a', cut vertically in the plate A, the length of the slot being equal to or a little in excess of the diameter of the rotary path of the shuttlecarrier. Y

The shuttle C is held in place upon thel upper side of the shuttle-carrierand against the plain faces of plate A-and disk b by an Vopen- Vsided box, E2, formed by end plate, against whichthe heel of theshuttle rests; aside plate; e5, with inner ribs', c, against which the back end, e, through the opening in which the point `or gate, et. This gate is hinged to the side e5 of the box by pin t' passing through lugs z" on the gate, and similar lugs, 2, on the side e5, both lugs i being placed on the same side (say the righthand side) of their respective lugs i2. In order to lock the gate in closed position, grooves i3 are out acrossthe matching faces of one set of lugs-say the lugs `z"'and corresponding tongues, z, are made on .the match- 'direction of Y the tongues and grooves being such within the other by an endwise movement of per thread and needle or for imparting feed,

To the face of disk or head or short face of the shuttle rests; aforked foreV f of the shuttle is passed, and byahinged cover IOO ing faces of the other set of lugs, i2, the line or thatthey may register and be inserted one Y the gate when the latter is closed. This endwise or locking movement is given by a coiled spring, i, seated around the pin fi, and bearing against one fixed lug i2 and one movable lug` z". By pressure upon the gate against the pressure of spring t, the gate may beunlocked, opened, and the shuttle be removed heel first or be inserted point first. On shutting the gate it will be locked automatically by the action of the spring.

In exterior form the shuttle C is substantially the same as shuttles in common use, having a tapering point, c, and a full fiat face, d, which bears against or moves upon the faces ot plates A and b. The upper side 0r lid, c2, of the shuttle is pivoted at or near one corner by pin c, on which the lid may be swung or turned to open or close the shuttle-chamber C. This lid is locked, when closed, by a springcatchh c", of the usual or any suitable construction, which takes into a notch, c", cut in the inner face of the lid.

In order to secure the requisite tension of thread, a headed pin, a, is passed through a closely-fitting hole, a', in the lid, and a hole, al, 1s made in the stein of the pin at a little distance from the head, into which the end of a small spring, a, is inserted,which spring is seated 1n a suitably-sliaped recess in the inner face of the lid, and is secured therein by a screw, a4, passed through the lid and into a tapped hole in the spring, near its heel. By turning this screw the head of pin a may be drawn more or less closely to the outer face of the lid. The thread is led out from the interior ofthe shuttle through -a small hole, a5, and is thence passed around pin o1, underneath its head, making nearly one circuit, whence it is passed through an eye or guide, a, to the table above, and is there held in starting the machine, as customarily practiced. By simply turning screw a* the pressure of pin-head n upon the thread may be increased or diminished, and thus the tension be regulated at pleasure.

The thread is carried within the shuttle upon a bobbin, B, of the usual spool form,which is slupported,when in place, upon axial points 1" r. One of these points, as r, is made yielding, as follows: A differential tubular passage, R', 0f two different diameters, is made axially through the bobbin, and the pin BF, having a stem, r2, of the size of the smaller part of the passage, and a head, 1', of thesize of thelarger part, is inserted stem first in tlielarger end, with its point o' protruding from the smaller end of the passage. Aspiing, r, is then placed in the larger part of the passage, which latter is closed by the screw-plug r. By pressure upon point r it will yield and permit the bobbin to be inserted or removed; but when the bobbin is in place the point 1' will be pressed against the wall of the shuttle-chamber, thereby suspending the bobbin upon points. These pointbearings not only facilitate turning the bobbin to unwind the thread, but also prevent the bobbin from falling out accidentally, and

in the path of the needle, by which the needle is Covered, except on the open side of the groove. The shuttle in its iace may thus pass close to the needle, but is prevented from striking it 5 also, the walls of the needlegroove s give an outward turn to the threadloop as the needle rises, and direct it into such position as to insure the proper entry of the shuttle.

It will be observed that in operation the shuttle crosses the needle-groove only in its forward movement, and that in its backward movement it is carried downward, and in so doing the strain on the lower thread in tightening the stitch is nearly in line with the needle and upper thread. In this way the two threads are drawn tight in nearly a direct line, and a more perfect stitch is secured thereby. In this vertical strain uponA the lower thread the locked gate c4 performs an important function in holding the shuttle iii place, as against such strain. throwing the shuttle from its box at whatever speed the machine may be run; also, by keeping the shuttle on the upper side of its carrier by means of the guide E throughout the whole of its circular lace, twisting` of the thread is prevented.

All the parts of this mechanism are plain and easily formed, thereby enabling them to be made with comparatively small expense. All the moving parts are so formed and connected as to be durable and easily adjusted. Consequently they can be keptin good running order by ordinary users of such machines. These features of construction and advantage are especially important in machines designed for general trade and use.

I claim herein as my invention- 1. The rotary shuttle-carrier E, having a shuttle-box, E2, on its upper side, and pivotlugs i on the side wall of the box, in combination with gate c4, having pivot-lugs i thereon, pivot-pin i, and spring i, the matching faces of the pivot-lugs having tongue and groove thereon, adapted to register and interlock when the gate is closed, substantially as set forth.

2. The shuttle C, having pin-hole u and thread-hole of in its side, in combination with headed pin n, spring a", adjusting-screw n4, and thread-guide n, substantially as and for the purposes set forth.

3. The combination of a shuttle having a pin-hole, n', therein, a pin, a, having a head thereon larger than the hole, with recess n2 in its stein, spring n3, having a point adapted to enter the recess, and having a tapped hole in its heel, and screw n, substantially as described, for the purpose of holding the thread under tension directly beneath the pin-head.

It also prevents possibility of IOO IIO

,4. The shuttle-carrier E, havingatail-guide, ment of the gate upon the pivot-pin, substan- E, below and a shuttle-box, E2, above its rotially as set forth. 1o tary center, with pvot-lugs 112 thereon, in Com- In testimony Whereoflhave hereunto set my bination With gate e, having pivot-lugs e" hand. 5 thereon, fitting the lugsfil on the'same side of SAMUEL R. VSAR(E`rEl\T.l.

each7 pivot-pin z', and spring 5, the lugs i v? Witnesses: having grooves and tongues i3 i4 thereon,whieh C. L. PARKER,

are engaged and disengaged by endwise move-w R. H. WHITTLESEY. 

